Conall Collamrach, son of Eterscél Temrach, son of Eochaid Ailtlethan, was, according to medieval Irish legend and historical tradition, a High King of Ireland

High King of Ireland

The High Kings of Ireland were sometimes historical and sometimes legendary figures who had, or who are claimed to have had, lordship over the whole of Ireland. Medieval and early modern Irish literature portrays an almost unbroken sequence of High Kings, ruling from Tara over a hierarchy of...

. He succeeded to the throne on the death of his uncle Óengus Tuirmech Temrach, and ruled for five years, until he was killed by Nia Segamain

Nia Segamain

Nia Segamain, son of Adamair, was, according to medieval Irish legend and historical tradition, a High King of Ireland. He took power after killing his predecessor, Conall Collamrach. Geoffrey Keating says his mother was the presumed woodland goddess Flidais of the Tuatha Dé Danann, whose magic...

. The Lebor Gabála synchronises his reign with that of Ptolemy VIII Physcon

Ptolemy VIII Physcon

Ptolemy VIII Euergetes II , nicknamed , Phúskōn, Physcon for his obesity, was a king of the Ptolemaic dynasty in Egypt. His complicated career started in 170 BC, when Antiochus IV Epiphanes invaded Egypt, captured his brother Ptolemy VI Philometor and let him continue as a puppet monarch...

 in Egypt (145-116 BC). The chronology of Geoffrey Keating

Geoffrey Keating

Seathrún Céitinn, known in English as Geoffrey Keating, was a 17th century Irish Roman Catholic priest, poet and historian. He was born in County Tipperary c. 1569, and died c. 1644...

's Foras Feasa ar Éirinn dates his reign to 232-226 BC, that of the Annals of the Four Masters

Annals of the Four Masters

The Annals of the Kingdom of Ireland or the Annals of the Four Masters are a chronicle of medieval Irish history...

to 326-320 BC.